Synovial Fluid Flashcards
Damage to the articular membranes produces pain and stiffness in the joints, collectively referred to as ____.
Arthritis
The normal amount of fluid in the adult knee cavity is less than ___ mL.
3.5
The color of synovial fluid becomes a deeper yellow in the presence of noninflammatory and inflammatory ____ and may have a greenish tinge with ____.
Effusions; bacterial infection
In measuring viscosity, a string measuring ____ cm is considered normal.
4-6
What is the reagent used in the Ropes or mucin clot test?
2-5% acetic acid
Very viscous fluid may need to be pretreated by adding 1 drop of ____ in phosphate buffer per mL of fluid.
0.05% hyaluronidase
Why can’t acetic acid be used as a diluting fluid for WBC count of synovial fluid?
Causes formation of mucin clot
What are macrophages with ingested neutrophils?
Reiter cells
What are neutrophils with small, dark cytoplasmic granules consisting precipitated RF?
RA cells (ragocytes)
Rice bodies macroscopically show ____ rice and microscopically show ____ & ____.
Polished; collagen; fibrin
Fluid is examined as an ____ wet preparation.
Unstained
TRUE or FALSE: MSU crystals lyse phagosome membranes and therefore do not appear in vacuoles.
True
The molecules in MSU crystals run ____ to the long axis of the crystal and, when aligned with slow vibration, produces a ____ color.
Parallel; yellow
The molecules in CPPD crystals run ____ to the long axis of the crystal; when aligned with the slow axis of the compensator, it produces a ____ color.
Perpendicular; blue
Patient should fast for ___ hours to allow equilibrium between synovial fluid and blood.
8
